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Commit 45240340 authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
Browse files

staging:iio: Fix adis16220 channel offsets and scales 



Most of the channel offsets and scales in the adis16220 are incorrect:
	* Temperature scale is off by a factor of 1000
	* Voltage scale is off by a factor of 1000
	* Acceleration seems to have a typo "187042" since it should be instead of
	  "1887042"
	* Temperature offset is completely wrong

This patch fixes these issues.

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent d5304b77

drivers/staging/iio/accel/adis16220_core.c

+11 −8
Original line number Diff line number Diff line
@@ -486,7 +486,7 @@ static int adis16220_read_raw(struct iio_dev *indio_dev, 
		break;

	case IIO_CHAN_INFO_OFFSET:

		if (chan->type == IIO_TEMP) {

			*val = 25;

			*val = 25000 / -470 - 1278; /* 25 C = 1278 */

			return IIO_VAL_INT;

		}

		addrind = 1;
@@ -495,19 +495,22 @@ static int adis16220_read_raw(struct iio_dev *indio_dev, 
		addrind = 2;

		break;

	case IIO_CHAN_INFO_SCALE:

		*val = 0;

		switch (chan->type) {

		case IIO_TEMP:

			*val2 = -470000;

			*val = -470; /* -0.47 C */

			*val2 = 0;

			return IIO_VAL_INT_PLUS_MICRO;

		case IIO_ACCEL:

			*val2 = 1887042;

			*val2 = IIO_G_TO_M_S_2(19073); /* 19.073 g */

			return IIO_VAL_INT_PLUS_MICRO;

		case IIO_VOLTAGE:

			if (chan->channel == 0)

				*val2 = 0012221;

			else /* Should really be dependent on VDD */

				*val2 = 305;

			if (chan->channel == 0) {

				*val = 1;

				*val2 = 220700; /* 1.2207 mV */

			} else {

				/* Should really be dependent on VDD */

				*val2 = 305180; /* 305.18 uV */

			}

			return IIO_VAL_INT_PLUS_MICRO;

		default:

			return -EINVAL;